yast2-trans-en_GB from YaST:SLE-15:SP1 project
Select Your Operating System
Add repository and install manually
For SLE 15 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/YaST:SLE-15:SP1/SLE_15/YaST:SLE-15:SP1.repo zypper refresh zypper install yast2-trans-en_GB